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  <title>Sets the internal pointer of the large object</title>
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  <div id="layout-content"><div id="ocilob.seek" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">OCILob::seek</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8, PECL OCI8 &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">OCILob::seek</span> &mdash; <span class="dc-title">Sets the internal pointer of the large object</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-ocilob.seek-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>OCILob::seek</strong></span>(<span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$whence</code><span class="initializer"> = <strong><code>OCI_SEEK_SET</code></strong></span></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Sets the internal pointer of the large object.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-ocilob.seek-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">offset</code></dt>

     <dd>

      <p class="para">
       Indicates the amount of bytes, on which internal pointer should be
       moved from the position, pointed by <code class="parameter">whence</code>.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">whence</code></dt>

     <dd>

      <p class="para">
       May be one of:
       <ul class="simplelist">
        <li class="member">
         <strong><code>OCI_SEEK_SET</code></strong> - sets the position equal to 
         <code class="parameter">offset</code>
        </li>
        <li class="member">
         <strong><code>OCI_SEEK_CUR</code></strong> - adds <code class="parameter">offset</code> 
         bytes to the current position  
        </li>
        <li class="member">
         <strong><code>OCI_SEEK_END</code></strong> - adds <code class="parameter">offset</code>
         bytes to the end of large object (use negative value to move to a position
         before the end of large object)
        </li>
       </ul>
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-ocilob.seek-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-ocilob.seek-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>8.0.0, PECL OCI8 3.0.0</td>
      <td>
       The <span class="classname"><strong class="classname">OCI-Lob</strong></span> class was renamed to
       <span class="classname"><a href="class.ocilob.html" class="classname">OCILob</a></span> to align with PHP naming standards.
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 seealso" id="refsect1-ocilob.seek-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><a href="ocilob.rewind.html" class="xref">OCILob::rewind</a></li>
    <li class="member"><a href="ocilob.tell.html" class="xref">OCILob::tell</a></li>
    <li class="member"><a href="ocilob.eof.html" class="xref">OCILob::eof</a></li>
   </ul>
  </p>
 </div>


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